30642 -- U.S. ZIP code Municipality (1990): GREENSBORO, Georgia All ZIPs for this municipality (1990): 30642 Population (2000): 9885 Housing Units (2000): 4617 Land area (2000): 236.809346 sq. miles (613.333364 sq. km) Water area (2000): 3.019893 sq. miles (7.821486 sq. km) Total area (2000): 239.829239 sq. miles (621.154850 sq. km) Located within: Georgia (GA) Location: 33.547041 N, 83.197974 W